Tower



R. P. DURHAM.

TOWER.

APPLICATION FILED IAN.5, 1920.

LLLLWINIl/J 2 SHEETS-SHEET 1.

f//JV Patented Sept. 6, 1921.

INVENTOR ATTORNEY R. P. DURHAM.

TOWER.

APPLICATION FILED JAN. 5, 1920.

1,390,102. y PatentedSept. 6,1921.

2 SHEETS-SHEET 2.

6 M/QMZ ATTORNEY nr orifice N ROBERT E.' DURHAM, OF CHICAGO, ILLINOIS.`

Towne.

Specification of Letters Patent.

Patented sept. e, roei..

Application filed January 5, 1920. Serial No. 349,436.

To all whom t may] concern.:

Be it known that l, Bonner P. DURHAM, a citizen of the United States, residing in Chicago, in the county of Cook and State of illinois, have invented certain new and useful Improvements in Towers, of which the following is a speciiication.

This invention relates to that class of towers or structures bymeans of which wireless telegraphic apparatus, signaling devices, or other apparatus or things to be employed for communication, or for signaling or other purposes, may be supported at an elevation suitable or desirable for poses to be accomplished.

The principal object of this invention is to provide a simple, economical and eliicient tower or structure adapted to support at a desirable or suitable elevation wireless telegraphic apparatus, signaling devices, or other apparatus or things to be employed in an elevated position for communication, signaling or other purposes. Y

Other and furtherobjects of the invention will appear from the following description and claims, and from an inspection of the accompanying drawings, which are made a part of this specification. y

The invention consists in the features, combinations, arrangement of parts and details of construction herein described and claimed.

In the accompanying drawings Figure l is a view in elevation of a tower or monolithic structure constructed in accordance with my invention; with a portion of the structure broken away so as to show substantially one halt of the structure in central vertical section;

Fig. 2 is a horizontal 'sectional view talren on line 2 of Fig. l, looking in the direction indicated by the arrow;

- F igf3 is an enlarged detail view in horizontal section, taken online 3 of Fig. l looking in the direction indicated by the arrow, and showing in section a portion of two' circular or concentric cylindrical walls and radial wall all formed in one integral piece of concrete provided with reinforcing metallic rods embedded in the concrete, as the same would appear in horizontal section taken on line 3 of Fig. 4l, looking downward; Fig.` e is an enlarged detail view in ver tical, section, taken on line l of Fig lool;-

the pury ing in the direction indicated by the arrow; Y

Fig. 5A is an enlarged view in transverse'` horizontal section, taken on line 5 of Fig. l, looking downward. as indicated by the arrow, with a portion of one side of the structure broken away; and

Fig. V' is a similarly enlargedview in cen-` tral vertical section through the structure as it'would appear taken on line ,6 of Fig. 5, looking in the direction indicated by the arrow.

In constructing a towerk or monolithic structure in accordance` with my invention, I provide a base l of suitable material', such7 :tor instance, as concrete. The base may be of any desired well known, ordinary or suitable form. y v

0n the base l erect the tower which is'by preference in the form of a monolithic structure a formed of concretewhich is, by preference reinforced by means of metalreinforcing rods or strips I) andV c.v

A very desirable form of tower,construct` ed in accordance with and embodying my invention, is shown in the accompanyingdrawinOs, and consists of or comprises in its construction a series ot' upright continuous, preferably cylindrical or circular and substantially concentric walls d, c, f, g, and Il, all of which are spaced apart, and, by preference, formed of concrete reinforced by means of suitable metallic reinforcing rods or strips,-

such', for instance, as the reinforcing rods or strips Zi and c. It will be readily understood, however, that in some instances the metal reintorcing` material may be dispensed wit-h if desired. The inner wall Z is the highest of the series of substantiallyconcentric walls, and is surrounded by all lof the otherwalls of the series. The outer wall Zt surrounds Aall of the other walls of the series, and isthe lowest wall of the series. intermediate walls extends above thetop of the next Vadjacent wall by which it is surrounded. Brietly stated, the series of sub` stantially concentric upright, preferably ,circular or cylindrical walls, consists ofor comprises an inner wall which issurrounded byA all of the other walls of the series, an outer. wall, and any desired number of intermediate walls all spacedV apart and surrounded by the outer wall,.each ot the walls or" the entire series being of greater height thanv the next And each of thev 4 structure. in the form of inwardly pro] sions of the radial walls z', are provided' on i provide convenient means y `covered thereby,v

Y piece with be and, by 'l wall.

adjacent'wall by whichrit is surrounded, so

,cumferentially of the` structure in upright position and spaced apartwith respect to each other. These radial walls connect each of' thei" cylindrical or circumferential concentric walls with the Vnext adjacent wall which it surrounds or by which it is surrounded; and at the top extremity of each of the concentric circular or cylindrical walls isi an annular cap, cover or coping k which is made in one integral piece with the wall and also in one integral the next adjacent inner wall which is surrounded by such cap, cover, or coping. Andthe innermost or highest wall is? provided with a cover or cap Z, which may preference, is integral'with said Doors or openings m are provided at'the bottom of the concentric walls d, c,'f, g, and h, for permitting access to the interior of the And projections n, which may be 'ecting extenthe inner side of the inner wall', for bracing and strengthening the structure, and also to for 'supporting any device or-apparatus which it may be found desirable to mount within the interior of the structure, forinstance, any means for gaining `access to the top of the structure or to any partV thereof, for any purpose.

Inbuilding a tower or structure of metalreinforced concrete in accordance with my invention I employ a .suitable vertically movable or adjustable form or mold, -which maybe of any desired or well Vknown type, having substantially concentric upright mold walls suitably spaced apart and adapted to form all ofthe walls of the structure which maybe of any desired proportions and dimensions suitable for the purposes to be accomplished.

Such molds or forms being iii common use and well known to ythose skilled in the art, and requiring only to form@ and dimensions to form the tower wallsby first moldingV the lower portions of all ofthe walls progressively but simultaneously, until the top of the outermost wall is reached;V thengfdiscarding or dispensing mold wall and continuing the progressive vmolding of all of the remaining walls simultaneouslyuntil the'top of next towerwall is reached, and 'so on until the Vtop of the tower is reached and the struc# cylindrical suitably vspaced apart or caps k may also be made of suitableV ture is completed, it is not deemed necessary to illustrate or further describe the mold or form to be used'or the manner of using it.

lt issuficient to say that the metal-reinforcing rods for forming the reinforcing metallic skeleton or frames for the lower portions of all of the walls are placed in position and so as to extend through the mold or between the mold walls in proper'position'; and the concrete mixture in plastic form and in suitable quantities is poured into the mold or forms so as to form the lowerportions of all of the walls of the structure, preferably simultaneously and progressively, allowing the concrete or plastic mixture to set in the mold, then raising the mold in a step by Vstep manner and pouring in another batch of the concrete or mixture in plastic condition and allowing it to set,r and harden in the mold, and so on progressively until all of the walls of the structure are formed and rigidly connected or united in a one-piece body, all connected in one integralpiece and forming a one-piece or monolithic structure.

The radial walls which connect the con'- tinuous annular substantially concentric walls are, by preference, formed in one integral' piece with the concentric or contin uous circular walls; and the annular covers be formed while the upper extremities of the walls to be covered thereby are in a plastic condition, so that the entire structure or body of the tower is in one connected orintegral piece or body Vpiece structure.

It will be readily apparent to thoseskilled in the art, however, that it is not so importantV that theV annular covers 7c should be formed integrally with the upright walls, and that the tower or structurel will be sufticiently strong and rigid either with or without the caps or covers 7c, or caps are in one integral piece with the up right walls or not. ut it is important that the continuous circular or annular upright walls and the radial connecting wall or walls should be formed together and `in such a iianner to form a continuous `unitary or one-piece body or'structure, which, in the form herein shown and described, embodies my invention and enables a tower of ygreat height andV strength in comparison with vthe quantity'of materials used, to be economically constructed. VA't-ower constructed asherein shown and described has the advantage of being 4economical in construction, stron@f and durable.V I

I c aim: i Y

l. 'A tower comprising in its construction a base, a series of substantially concentric upright continuous walls, all mounted on and extending upward from said baseiand spaced apart throughout their entire length whether said vertically from said base upward to the tops thereof, said series comprising an inner wall, an outer surrounding wall, an intermediate wall surrounding the inner wall and surrounded by the outer wall, each of said walls being of greater height than the adjacent wall by which it is surrounded, and connecting means forming a rigid connection between a plurality of said walls.

2. A tower comprising in its construction a base, a series of substantially concentric upright continuous walls all mounted on and extending upward from said base and spaced apart throughout their entire length vertically from said base upward to the tops thereof, and comprising an inner wall, an outer surrounding wall, an intermediate wall surrounding the inner wall and surrounded by the outer wall, each of said walls being of greater height than the adjacent wall by which it is surrounded, and a radial connecting wall formed integrally with and forming a rioid connection between a plurality of said walls.

3. A tower comprising in its construction a base, a series of upright continuous walls all mounted on and extending upward from said base and spaced apart throughout their entire length vertically from said base upward to the tops thereof, and comprising an inner wall, an outer surrounding wall, an intermediate wall surrounding the inner wall and surrounded by the outer wall, each of said walls being of greater height than the adjacent wall by which it is surrounded, and

' a radial connecting wall adapted to form a rigid connection between a plurality of said walls, all of said walls being formed in one integral piece and forming a unitary onepiece structure.

4. A tower comprising in its construction a base, a series of upright continuous walls all mounted on and extending upward from said base and spaced apart throughout their entire length vertically from said base upward to the tops thereof, and comprising an inner wall, an outer surrounding wall, a plurality of intermediate walls all surrounding the inner wall and surrounded by the outer wall, each of said walls being of greater height than the adjacent wall by which it is surrounded, and a radial connecting wall connected with and adapted to form a rigid connection between said walls, all of said walls being formed in one integral piece and forming a one-piece structure.

5. A tower comprising in its construction a base, a series of continuous upright walls formed of concrete and all mounted on and extending upward from said base and spaced apart throughout their entire length vertically from said Vbase upward to the tops thereof, and comprising an inner wall, an outer surrounding wall, a plurality of intermediate walls all surrounding the inner wall and surrounded by the outer wall, each of said walls being of greater height than the adjacent wall by which itis surrounded, and a pluralityof radial connecting walls connected with and forming a rigid connection between all of said walls, all of said walls being formed in one integral piece and forming a rigid one-piece structure.

6. A tower comprising in its construction a base, a series of substantially concentric upright continuous walls formed of metalreinforced concrete and all mounted on and extending upward from said base and spaced apart throughout their entire length vertically Vfrom said base upward to the tops thereof, said series comprising an inner wall, an outer surrounding wall, and a plurality of intermediate walls surrounding the inner wall and surrounded by the outer wall, each of said walls being of greater height than the adjacent wall by which it is surrounded,

a plurality of radial connecting walls con? necting all of said concentric walls, all of said walls being rigidly connected and formed in one integral body and forming a` rigid one-piece structure, a cover at the top of the inner highest wall, forming a top closure for the space surrounded by said wall, and a cover at the top of each of the concentric walls surrounding said inner highest wall.

Signed at Chicago, in the county of Cook and State of Illinois, this 29th day of December, 1919.

ROBERT P. DURHAM. 

